Compatible Models: HP Compaq Business HP Compaq Business Notebook 6530b, HP Compaq Business Notebook 6535b, HP Compaq Business Notebook 6730b, HP Compaq Business Notebook 6735b HP HP EliteBook 6930p, HP EliteBook 8440p, HP EliteBook 8440w, HP ProBook 6440b, HP ProBook 6445b, HP ProBook 6450b, HP ProBook 6540b, HP ProBook 6545b, HP ProBook 6550b, HP ProBook 6555b Compatible part numbers 458640-542, 482962-001, 484786-001, HSTNN-UB68, HSTNN-UB69, HSTNN-XB24, HSTNN-XB59, HSTNN-XB61, HSTNN-XB68, HSTNN-XB69, KU531AA Please carefully check if your laptop and battery model is compatible replacement item Specifications: - Battery type: Li-ion - Voltage: 10.8V - Capacity: 4400 mAH - Brand: Unbranded /OEM What's in the box 1 X HP Compaq 6730B, Elitebook 6930P, 8440P Compatible Replacement Battery